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2017 ; 12
(1
): 170
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The Study of Metal Sulfide as Efficient Counter Electrodes on the Performances of
CdS/CdSe/ZnS-co-sensitized Hierarchical TiO(2) Sphere Quantum Dot Solar Cells
#MMPMID28274089
Buatong N
; Tang IM
; Pon-On W
Nanoscale Res Lett
2017[Dec]; 12
(1
): 170
PMID28274089
show ga
The effects of using different counter electrode metal sulfides on the
performances of solar cells made with CdS/CdSe/ZnS quantum dots co-sensitized
onto hierarchical TiO(2) spheres (HTSs) used as photo-electrode are reported. The
HTS in the QDSSCs is composed of an assembly of numerous TiO(2) spheres made by
the solvolthermal method. The photoelectrical performance of HTS/CdS/CdSe/ZnS
coupled to CuS or to Cu(2)ZnSn(S(1?-?x) Se (x) )(4) with x?=?0, 0.5, or 1.0
counter electrodes (CEs) were compared to those coupled to Pt CE. The
HTS/CdS/CdSe/ZnS coupled to the CuS CE showed the highest power conversion
efficiency ? (of 3.46%). The efficiencies ? of 1.88, 2.64, and 2.06% were
obtained for CZTS (x?=?0), CZTS(0.5)Se(0.5) (x?=?0.5), and CZTSe (x?=?1),
respectively. These are significantly higher than those using a standard Pt CE
(??=?0.37%). These higher efficiencies are the results of the higher
electrocatalytic activities when the metal sulfide CEs are used.